CA2528041A1 - Seating with comfort surface - Google Patents

Seating with comfort surface Download PDF

Info

Publication number
CA2528041A1
CA2528041A1 CA 2528041 CA2528041A CA2528041A1 CA 2528041 A1 CA2528041 A1 CA 2528041A1 CA 2528041 CA2528041 CA 2528041 CA 2528041 A CA2528041 A CA 2528041A CA 2528041 A1 CA2528041 A1 CA 2528041A1
Authority
CA
Canada
Prior art keywords
support members
seating unit
unit defined
recesses
seating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2528041
Other languages
French (fr)
Other versions
CA2528041C (en
Inventor
Renard G. Tubergen
Gordon J. Peterson
Kurt R. Heidmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steelcase Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/241,955 external-priority patent/US6869142B2/en
Application filed by Individual filed Critical Individual
Publication of CA2528041A1 publication Critical patent/CA2528041A1/en
Application granted granted Critical
Publication of CA2528041C publication Critical patent/CA2528041C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02—Upholstery attaching means
    • A47C31/04—Clamps for attaching flat elastic strips or flat meandering springs to frames
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Paper (AREA)
  • Vehicle Body Suspensions (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)
  • Seats For Vehicles (AREA)
  • Harvester Elements (AREA)

Abstract

A chair includes a base, a seat, a back, and a control operably supporting the seat and back on the base for movement between upright and recline positions.
The seat and back include a stiff perimeter frame with opposing perimeter sections, and a plurality of rods each independently bendable in vertical and angled directions. End bearings on the rods are captured in pockets in the perimeter frame, which limits their inward and outward sliding movement. The control includes front and rear leaf springs and a pivot arm operably supporting the seat and the back for synchronous movement, with the direction of movement being such that energy is stored during recline. The energy stored during recline assists in providing a heavier person with added counterbalancing force during recline. A booster mechanism is also selectively engageable for added support upon recline.

Claims (30)

1. A seating unit comprising:
a frame adapted to support a seated user, the frame having spaced-apart opposing side sections each with a plurality of recesses therein, the recesses being defined by parallel walls spaced apart a predetermined distance; and a plurality of resilient support members extending between the opposing side sections, each support member having a cross-sectional width that is about equal to the predetermined distance and each being independently bendable and each further having laterally-formed ends operably slidably positioned in an associated one of the recesses and coupled to the side sections to engage the associated recess for controlled sliding movement.
2. A seating unit comprising:
a frame;
a flexible seating surface supported by the frame; and a plurality of elongated resilient force-distributing support members associated with said seating surface to control a contour of the seating surface when supporting a seated user, the resilient force-distributing support members being generally flexible and bendable along their length and being sufficient in number and distribution across the seating surface so as to reduce localized deflection of the seating surface and thereby reduce point contact pressure associated with the seated user, wherein the frame includes opposite side sections with at least one recess therein, and wherein the force-distributing support members include shaped ends captured in the at least one recess and that slidably engage the at least one recess for controlled sliding movement upon flexure of the force-distributing support members.
3. The seating unit defined in any one of the preceding claims, wherein the ends of the support members are L-shaped.
4. The seating unit defined in any one of the preceding claims, wherein the recesses include surfaces that engage the ends to limit inward sliding movement thereof.
5. The seating unit defined in any one of the preceding claims, wherein the side sections include angled surfaces constructed to engage and limit flexure of the support members.
6. The seating unit defined in any one of the preceding claims, wherein the recesses include surfaces that engage the ends to limit outward sliding movement thereof.
7. The seating unit defined in any one of the preceding claims, wherein the support members each include a bent wire with a first portion forming the length and a second portion forming the ends.
8. The seating unit defined in claim 7, wherein the first portion includes a linear section of wire rod when in an unstressed condition.
9. The seating unit defined in claim 7, wherein the second portion is L-shaped.
10. The seating unit defined in any of the preceding claims, wherein the wire is made of spring steel.
11. The seating unit defined in any of the preceding claims, wherein the recesses form individual pockets, and wherein the ends are captured in the pockets.
12. The seating unit defined in any of the preceding claims, including a cover that covers the recesses sufficiently to non-releasably capture the ends of the support members.
13. The seating unit defined in any of the preceding claims, wherein several of the ends of the support members engage an outer end surface of the recesses to cause tension in the support members resulting in a bowed shape in the several support members.
14. The seating unit defined in any of the preceding claims, wherein adjacent ones of several of the support members form an elongated loop, with a length of the loop comprising a pair of long parallel members, and the ends of the loop being short transverse members.
15. The seating unit defined in any of the preceding claims, wherein the frame defines a back.
16. The seating unit defined in any of the preceding claims, wherein the frame defines a seat.
17. The seating unit defined in any of the preceding claims, wherein the support members are separate wires that include a single strand extending between the opposing side sections.
18. The seating unit defined in any of the preceding claims, wherein the side sections include inner end surfaces located inboard of at least some of the recesses and that are angled relative to vertical, and are configured to support and limit flexure of the resilient support members when flexed.
19. The seating unit defined in any of the preceding claims, including a lumbar device adjustably engaging at least one of the support members and adapted to support the one support member at a location inboard of at least one of the ends of the one support member.
20. The seating unit defined in any of the preceding claims, including an upholstered cushion rested on the frame.
21. The seating unit defined in any of the preceding claims, wherein the side sections each include an inner wall having apertures through which the support members extend.
22. The seating unit defined in any of the preceding claims, wherein the support members are made of spring steel.
23. The seating unit defined in any of the preceding claims, wherein the support members have a round cross section.
24. The seating unit defined in any of the preceding claims, wherein at least some of the support members include a bearing attached to their ends.
25. The seating unit defined in claim 24, wherein the bearing defines a channel that captures an associated one of the ends.
26. The seating unit defined in claim 25, wherein the channel is shaped to snappingly engage the associated one end.
27. The seating unit defined in any of the preceding claims, including a flexible sheet covering the support members.
28. The seating unit defined in any of the preceding claims, including a cushion on the support members.
29. A comfort surface for a seating unit comprising:
a flexible seating surface defining a plurality of recesses with openings that open in an inboard direction and that are smaller than the recesses;
a plurality of elongated resilient force-distributing support members associated with said seating surface to control the contour of the seating surface when supporting a seated user, the resilient force-distributing support members being generally bendable along their length and being sufficient in number and distribution across the seating surface so as to reduce localized deflection of the seating surface and thereby reduce point contact pressure associated with the seated user, the force-distributing support members having end portions that extend laterally within the recesses relative to the openings to restrict movement of the end portion but that permit limited sliding within the recesses.
30. A seating unit comprising:
a frame adapted to support a seated user, the frame having opposing side frame sections, each with a series of parallel elongated recesses that open in an inboard direction and that extend in a depth direction;
a plurality of resilient support members extending between the side frame sections, each support member being having ends extending into the recesses and a bent portion captured in respective ones of the recesses; and means for supporting the ends of the wires within the recesses for controlled sliding movement when the support members are resiliently bent.
CA 2528041 2002-09-12 2004-06-04 Seating with comfort surface Expired - Lifetime CA2528041C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US10/241,955 US6869142B2 (en) 2002-09-12 2002-09-12 Seating unit having motion control
US10/455,487 2003-06-05
US10/455,503 US7165811B2 (en) 2002-09-12 2003-06-05 Control mechanism for seating unit
US10/455,487 US7226130B2 (en) 2002-09-12 2003-06-05 Seating with comfort surface
US10/455,076 US6880886B2 (en) 2002-09-12 2003-06-05 Combined tension and back stop function for seating unit
PCT/US2004/017777 WO2004107915A2 (en) 2002-09-12 2004-06-04 Seating with comfort surface
DE102007002284A DE102007002284A1 (en) 2002-09-12 2007-01-16 chair

Publications (2)

Publication Number Publication Date
CA2528041A1 true CA2528041A1 (en) 2004-12-16
CA2528041C CA2528041C (en) 2010-10-05

Family

ID=53441578

Family Applications (2)

Application Number Title Priority Date Filing Date
CA 2498395 Expired - Lifetime CA2498395C (en) 2002-09-12 2003-09-08 Control mechanism for seating unit
CA 2528041 Expired - Lifetime CA2528041C (en) 2002-09-12 2004-06-04 Seating with comfort surface

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA 2498395 Expired - Lifetime CA2498395C (en) 2002-09-12 2003-09-08 Control mechanism for seating unit

Country Status (15)

Country Link
US (8) US6880886B2 (en)
EP (7) EP1578230B1 (en)
JP (2) JP4562532B2 (en)
KR (1) KR100779809B1 (en)
CN (3) CN102669972B (en)
AT (1) ATE500767T1 (en)
AU (2) AU2003272280B2 (en)
BR (2) BRPI0314234B1 (en)
CA (2) CA2498395C (en)
DE (3) DE102007002284A1 (en)
ES (1) ES2359169T3 (en)
MX (1) MXPA05002605A (en)
PL (1) PL1946676T3 (en)
TW (2) TWI257294B (en)
WO (2) WO2004023934A2 (en)

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